Fix bug in AutoDJ refactor (6a51924) that caused player-stop-watching
during fading to apply to the wrong deck. Fixes Bug #1396999.
Equalizer preference page fixes

* By default, all decks and quick effects have the same plugin
* it's a quick effect knob, not a filter knob
* select a default quick effect
* by default, master eq should be off
* hide "reset parameter" option when master eq is off.
Merge remote-tracking branch 'upstream/master' into deere_updates